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Eaton

1000 Eaton Boulevard

Cleveland, OH 44122

United States

Eaton .com

© 2018 Eaton

All Rights Reserved

Printed in USA

Publication No . IB182047EN / TBG001376

February 2018

Eaton is a registered trademark.

All other trademarks are property  

of their respective owners.

Arc flash limiter (AFL)  

conversion system 

  

Instruction Booklet 

IB182047EN

Effective February 2018

DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY

The information, recommendations, descriptions and safety nota-

tions in this document are based on Eaton Corporation’s (“Eaton”) 

experience and judgment and may not cover all contingencies . 

If further information is required, an Eaton sales office should be 

consulted . Sale of the product shown in this literature is subject 

to the terms and conditions outlined in appropriate Eaton selling 

policies or other contractual agreement between Eaton and the 

purchaser .
THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, 

EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF 

FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, 

OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING 

CONTRACT BETWEEN THE PARTIES . ANY SUCH CONTRACT 

STATES THE ENTIRE OBLIGATION OF EATON . THE CONTENTS OF 

THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY 

ANY CONTRACT BETWEEN THE PARTIES . 
In no event will Eaton be responsible to the purchaser or user in 

contract, in tort (including negligence), strict liability or other-wise 

for any special, indirect, incidental or consequential damage or loss 

whatsoever, including but not limited to damage or loss of use of 

equipment, plant or power system, cost of capital, loss of power, 

additional expenses in the use of existing power facilities, or claims 

against the purchaser or user by its customers resulting from the 

use of the information, recommendations and descriptions contained 

herein . The information contained in this manual is subject to change 

without notice . 

Содержание AFL

Страница 1: ...ents Description Page 1 Introduction 2 2 AFL conversion system and components 3 3 Typical installation performed by qualified personnel 5 4 AFL conversion system control unit 7 5 Maintenance 8 6 Parts List 8 Appendix A 9 Arc flash limiter AFL conversion system ...

Страница 2: ...ost of capital loss of power additional expenses in the use of existing power facilities or claims against the purchaser or user by its customers resulting from the use of the information and descriptions contained herein 1 1 2 Safety precautions All safety codes safety standards and or regulations must be strictly observed in the operation and maintenance of this system m WARNING THE WARNINGS AND...

Страница 3: ...n and a set of current sensors are added to the secondary side of the transformer to feed the ARMS feature on the breaker trip unit In some cases the original discon nect switch is retained The control unit also includes a breaker control switch and breaker status LEDs for breaker control The 520MCV trip unit with Maintenance Mode in the breaker inter faces with the ARMS switch mounted in the cont...

Страница 4: ...ll introduce an increased risk of destructive high voltage transients into the system Transient voltages have been proven to cause transformer failures during switching To mitigate this risk it is highly recommended Eaton Power Systems Engineering PSE conduct a switching transient study to determine the optimal surge protection surge arrester RC snubber and or damping resistor needed to mitigate s...

Страница 5: ... joints and connections and insure they meet the standards identified in NEC Table 490 24 Qualified field service technicians will install the disconnect switch to breaker connections These will usually be copper bus work typically 1 4 x 2 or 1 4 x 3 6 35 x 50 8 mm or 6 35 x 76 2 mm In some cases the connections will be cable instead of copper bus work depending on the rating of the breaker Refer ...

Страница 6: ...th the AFL conversion system it was designed based on the results of the optional study of the customer s existing original electrical system performed by Eaton PSE Figure 7 Typical custom snubber Qualified field service technicians will install the control unit either on the enclosure door or mounted remotely based on the customer s preference If a remotely mounted control unit is selected the co...

Страница 7: ...s 50 51 protection 2 Breaker control switch The breaker control switch is used to open and close the breaker 3 Red indicating LED pushbutton The red indicating LED pushbutton indicates the breaker is closed 4 White indicating LED pushbutton The white indicating LED pushbutton indicates the springs of the breaker are charged 5 Green indicating LED pushbutton The green indicating LED pushbutton indi...

Страница 8: ... 3 Current sensor 3 AFL control unit 120 Vac NEMA 1 1 Copper phase A load 1 Copper phase B load 1 Copper phase C load 1 Copper phase A line 1 Copper phase B line 1 Copper phase C line 1 Phase barrier 2 Nameplate Eaton AFL Assembly 1 Nameplate AFL Ratings 1 Table 2 Torque values for general mounting and screw size conversion Decimal size in Standard size Torque in lbs Torque ft lbs 112 4 40 10 0 8 ...

Страница 9: ...T OVERLAP A SPECIFIED DISTANCE MEASURED ALONG THE PRE INSULATION STARTING FROM THE POINT WHERE THE PRE INSULATION ENDS AND THE EXPOSED CONDUCTOR BEGINS METHODS GENERAL 1 ELONGATE INSULATING TAPE 10 TO 25 PERCENT DURING APPLICATION TO INSURE A SMOOTH TIGHT FIT ON PADS ELONGATE CORNERS ONLY 2 SHOULD A TAPE ROLL EXPIRE START THE NEW ROLL BY OVERLAPPING THE PREVIOUS END BY 5 TURN T JOINTS WITH HARDWAR...

Страница 10: ... 030 THICK PAD 2 STARTING 50 INCH FROM CENTER AND EXTENDING OVER PREINSULATION AT LEAST 1 0 INCH WITH 1 1 4 LAPS APPLY 3 00 X 030 THICK PAD 3 STARTING 1 00 FROM PAD 2 AT CENTER AND EXTENDING 1 00 IN OVER PREINSULATION PER FIG 8 6 APPLY ONE LAYER OF INSULATING TAPE 1 00X 030 USING 2 3 LAP AND EXTENDING 0 50 INCH MINIMUM BEYOND THE PADS ON THE PREINSULATION PER FIG 9 7 APPLY A SECOND LAYER OF INSULA...

Страница 11: ...ated pothead bushing Pothead ground lead must be carried through the Zero Sequence current transformer and solidly grounded on the load side of the ct as shown Use 6 wire with 600 V insulation Power cables Conduit when used Cable connections to switchgear terminals when used with Insulated Pothead Conduit must be terminated and solidly grounded on the load side of the current transformer Zero Sequ...

Страница 12: ...between Eaton and the purchaser THERE ARE NO UNDERSTANDINGS AGREEMENTS WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT BETWEEN THE PARTIES ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON THE CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETW...

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